On some unusual twin-laws observed in the orthoclase crystals from Goodsprings, Nevada
Published online by Cambridge University Press: 14 March 2018
Extract
The very abundant literature dealing with the twinning of felspar phenocrysts has put on record a surprisingly large number of twin-laws. Some of these have such complex indices that they have never been accepted; others are regarded as doubtful. Yet the authors of these have well-established reputations and the accuracy of their observations cannot be doubted. The difficulty lies in the interpretation of the results. Beside numerous examples of well-defined laws, one comes across a high percentage of isolated cases, each appearing quite as plausible as these, yet difficult to assign to any definite law.
- Type
- Research Article
- Information
- Mineralogical magazine and journal of the Mineralogical Society , Volume 25 , Issue 160 , March 1938 , pp. 1 - 14
- Copyright
- Copyright © The Mineralogical Society of Great Britain and Ireland 1938
References
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